Part of the reason I waited almost a year to start DIY is it looked SOOOO damn complicated. If you believe that it's only because you read this forum. I ordered 1 liter bottles of nic, PG and VG and one flavor that looked promising plus some mixing supplies. Cost delivered from MFS, $106. I got the stuff last Thursday, was vaping the first 30 ml batch minutes after I made it on Friday and prefer it to my commercial liquid, probably because they use too much flavoring for me (it's the same thing I don't like about restaurant food). The mixing calculater says my cost is 2 cents per ml. My 5 ml habit works out to 12 cents a day and $45 a year.